Earnings Per Share - Rights Offering (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 28, 2018	Jun. 30, 2018
Rights Offering
Net proceeds		$ 9,785
Rights Offering
Rights Offering
Gross proceeds from issuance of stock	$ 10,000
Proceeds from rights offering, net (in shares)	5,000,000
Net proceeds	$ 9,800
Everest Hill Group | Rights Offering
Rights Offering
Proceeds from rights offering, net (in shares)	3,257,645
Percentage of entity's stock owned by majority shareholder		52.70%